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1. #Gideros event key down update#
2. #Gideros event key down code#
3. #Gideros event key down download#
4. #Gideros event key down free#

#Gideros event key down update#

Update the sprite's rotation to match the box2d world rotationīody.object:setRotation(math. Update the sprite's position to match the box2d world positionīody.object:setPosition(body:getPosition()) Update the World stateįinally, the for loop iterates over all objects in the self.bodies member variable and performs the crucial step of setting the positions of their graphical objects to match the positions of the physical bodies from box2D’s model of the world: local body Since the game project is configured to run at 60 frames per seconds, the call here to self.world:step() instructs the Box2D model of the world to simulate the passage of 1/60 of a second. Then, the function calls self.world:step() to force the next Box2D update cycle. Local removed = table.remove(self.bodiesToRemove) Remove any bodies that were marked for removal in the previous frame. This function first processes any physical bodies that have been marked for removal during a previous Box2D cycle: - Create a new ball if the last one fell through the floor. The main game loop is updated in the GameScene:onEnterFrame() function, which is registered to listen for Gideros ENTER_FRAME events. Table.insert(self.bodiesToRemove, bodyA.bodyNumber)Įlseif bodyA.type = "Floor" and bodyB.type = "Ball" then If bodyA.type = "Brick" and bodyB.type = "Ball" then This delay is necessary because Box2D locks its world while it is in the middle of updating itself. Note that in cases where an object should be removed from the scene (a brick has been hit, or the ball falls through the floor), the object is not immediately removed. = self.bodiesAdded + 1Ĭollisions between the ball and other objects (Bricks, Boundary, or the Paddle) are handled in the GameScene:onPostSolve() method, which is registered to listen for Box2D POST_SOLVE events. Store each physical body in a table with a unique key Local brick = Brick.new(self, lor, x, value.y, value.points)Ī key helper function called addChildAndBody() is used to add the graphical objects to the Gideros scene and then add the corresponding physical object to the self.bodies member variable: function GameScene:addChildAndBody(sprite) Local paddle = Paddle.new(self, lor, value.x, value.y) Local levelData = dataSaver.load("levels/".level) Local level = SETTINGS:get("currentLevel") Local body = :createBodyĬode in the “`GameScene:init()” parses this data, creates corresponding graphical and physical objects, and adds them to the scene: - Load the objects for the current level. This causes the ball to be affected by Box2D’s gravity. Note that the ball’s body is created as a Box2D DYNAMIC_BODY object. The body is a Box2D object, and it is stored inside the Ball class as a member variable.

The physical representation of the Ball is defined in the Ball:createBody() function.

Self.bitmap = Bitmap.new(:getTextureRegion("ball_".color.".png")) The graphical representation of the Ball is defined in the Ball:init() function: Ball = Core.class(Sprite)įunction Ball:init(level, color, x, y, impulseX, impulseY)

#Gideros event key down code#

Most of the interesting code has to do with using Box2D to detect collisions between the ball and other objects, and then react appropriately, so that’s what I will focus on in this article. In the same directory there are files for each of the two scenes in the game: These files are under the gibricks/code directory: The source code for GiBricks is structured in an objected oriented style, where each object in the game has its own Gideros class and corresponding. I used the Box2d physics engine, which comes built into Gideros Studio, to model the various physical objects in the game. Once you launch Gideros Studio, open the GiBricks.gproj file, and start the Gideros Player, you should see something like this:Īs you can see from the screenshot, GiBricks is inspired by the iconic Atari game Breakout.

#Gideros event key down download#

If you would like to run a local copy of GiBricks and be able to modify it, download the GiBricks source code from github and the Gideros Studio devlopment environment. In this article I will discuss some concepts that are key to creating a game like this. I recently spent a few days creating a demo 2D game called GiBricks using Gideros, and I was pleasantly surprised at how easy it was. However unlike Defold, Gideros is Open Source, and it doesn’t require access to a third party server to use. Like Defold, Gideros also supports live testing on target devices over wifi. Similar to Defold from King, it allows you to write your game once in Lua and deploy it to iOS, Android, HTML5, and other platforms.

#Gideros event key down free#

Gideros is a free game engine that makes it easy to create 2D mobile games.